{"product_id":"new-surly-karate-monkey-steel-hardtail-mountain-bike-lost-at-sea","title":"NEW Surly Karate Monkey Steel Hardtail Mountain Bike - Lost at Sea - 210000059649","description":"\u003ch2\u003eNEW Surly Karate Monkey Steel Hardtail Mountain Bike - Lost at Sea - 210000059649\u003c\/h2\u003e\n\u003cp\u003eThe Karate Monkey Front Suspension bike features a Rock Shox 35 Gold RL A2 suspension fork with 140mm travel, and it’s paired with a dropper post out the box. Progressive trail geometry and Surly’s Gnot-Boost rear dropout system deliver a versatile bike with the ability to swap hubs and wheel sizes. If you want to round-house kick some trail right in the face, the Karate Monkey is your sled.\u003c\/p\u003e\n\u003ch5\u003eFeatures                    \u003c\/h5\u003e\n\u003cul class=\"bullet-points bullet-points-collapsed\"\u003e\n\u003cli class=\"model-bullet\"\u003e100% Surly Chromoly steel frame, double-butted main triangle and 44mm headtube\u003c\/li\u003e\n\u003cli class=\"model-bullet\"\u003eThe tubeset uses Surly custom trumpet tubes for greater stiffness and durability\u003c\/li\u003e\n\u003cli class=\"model-bullet\"\u003eAdjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142 and 148 x 12mm thru, as well as 135mm w\/ 10\/12 washer\u003c\/li\u003e\n\u003cli class=\"model-bullet\"\u003eRockShox 35 Gold RL A2 suspension fork with 140mm travel\u003c\/li\u003e\n\u003cli class=\"model-bullet\"\u003eTranzX YSP15 dropper post with stealth routing; 100mm travel on XS, 120mm travel on SM–XL\u003c\/li\u003e\n\u003cli\u003eComplete Bike Weight: 33 lb. 13 oz. for Medium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFrame: Surly Karate Monkey - 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated\u003c\/li\u003e\n\u003cli\u003eFork: RockShox 35 Gold RL, 27.5\", 15 x 110mm, 140mm travel, 44mm offset\u003c\/li\u003e\n\u003cli\u003eColor: Lost at Sea Blue\u003c\/li\u003e\n\u003cli\u003eRear Derailleur: Shimano M8100 XT SGS\u003c\/li\u003e\n\u003cli\u003eCassette: SunRace CSMZ800, 11-51t, 12spd\u003c\/li\u003e\n\u003cli\u003eChain: KMC X12 Anti-Rust\u003c\/li\u003e\n\u003cli\u003eCrankset: Shimano MT511, 30T\u003c\/li\u003e\n\u003cli\u003eBottom Bracket: Shimano MT501, BSA\u003c\/li\u003e\n\u003cli\u003eShifter: Shimano Deore XT M8100\u003c\/li\u003e\n\u003cli\u003eBrakes and Rotors: Tektro HD-M3520, Tektro 180\/160, 6-Bolt\u003c\/li\u003e\n\u003cli\u003eHeadset: Cane Creek\u003c\/li\u003e\n\u003cli\u003eStem: Promax DA-296, 31.8mm\u003c\/li\u003e\n\u003cli\u003eHandlebar: Salsa Rustler\u003c\/li\u003e\n\u003cli\u003eGrips \/ Bar Tape: Velo Black\u003c\/li\u003e\n\u003cli\u003eSeatpost: TranzX YSP15, 30.9mm Travel XS: 100mm, SM-XL: 120mm\u003c\/li\u003e\n\u003cli\u003eSaddle: WTB Volt Medium\u003c\/li\u003e\n\u003cli\u003eFront Hub: Novatec 15x110mm, 32h\u003c\/li\u003e\n\u003cli\u003eRear Hub: Novatec 12x148mm, 32h\u003c\/li\u003e\n\u003cli\u003eRims: WTB ST i35 TCS 2.0 27.5\"\u003c\/li\u003e\n\u003cli\u003eTires: Surly Dirt Wizard 27.5 x 2.8\", 60tpi, Tubeless Ready\u003c\/li\u003e\n\u003cli\u003eSpokes: 14G Black\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHighly versatile steel hardtail mountain bike designed for trail riding, bikepacking, commuting, and all-terrain exploration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChromoly steel frame delivers a smooth, durable ride feel that reduces fatigue on rough and technical terrain.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with 29\" wheels (and 27.5+ setups depending on build), offering flexibility for speed, comfort, or traction-focused builds.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTrail-ready geometry balances stability on descents with responsive handling in tight, technical sections.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuspension-corrected design supports modern fork setups for improved control and capability on rough trails.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWide tire clearance allows high-volume tires for enhanced grip, comfort, and year-round versatility.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMultiple mounting points make it an excellent platform for bikepacking and utility-focused configurations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e“Lost at Sea” finish adds a distinctive, adventurous aesthetic while maintaining its rugged, utilitarian identity.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What type of riding is the Surly Karate Monkey designed for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The Surly Karate Monkey is a highly versatile steel hardtail mountain bike built for trail riding, bikepacking, commuting, and all-around off-road exploration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What material is the frame made from?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It uses 4130 Chromoly steel (Surly Natch tubing), delivering durability, comfort, and a smooth, confidence-inspiring ride on rough terrain.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What wheel sizes does it support?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It can run both 27.5+ and 29” wheels, making it adaptable for different terrains, riding styles, and tire preferences.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What makes the Karate Monkey different from other hardtails?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Its adjustable geometry and multi-wheel compatibility make it a true “one-bike-does-it-all” platform for riders who value flexibility and long-term usability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Is it suitable for bikepacking?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. It includes multiple mounts for racks, bottles, and gear, making it a strong choice for loaded touring and off-road bikepacking trips.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What terrain is it best for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It handles singletrack, gravel roads, forest trails, and mixed-surface riding with stable yet playful geometry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What drivetrain does it typically use?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It is commonly built with modern wide-range 1x drivetrains for simplicity, reliability, and climbing performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Is this bike rigid or suspension-equipped?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The Karate Monkey can be built either way, but this version is typically a rigid steel hardtail for simplicity and low maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What is special about the “Lost at Sea” color?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It is a deep, muted blue finish that reflects Surly’s rugged aesthetic while giving the bike a distinctive, understated look.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQ: Who is this bike best for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Riders who want a durable, adaptable steel mountain bike that can handle trails, commuting, and adventure riding without specialization.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003cspan\u003e \u003c\/span\u003e\n\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003e• Clean frame, fork, and drivetrain after trail, mud, or wet rides to prevent dirt buildup and corrosion.\u003c\/p\u003e\n\u003cp\u003e• Inspect steel frame and welds regularly for chips, scratches, or early rust spots.\u003c\/p\u003e\n\u003cp\u003e• Touch up exposed metal promptly to prevent long-term corrosion.\u003c\/p\u003e\n\u003cp\u003e• Apply internal frame rust inhibitor periodically, especially in wet, coastal, or winter conditions.\u003c\/p\u003e\n\u003cp\u003e• Check drivetrain for wear, proper shifting, and maintain regular chain lubrication.\u003c\/p\u003e\n\u003cp\u003e• Inspect headset, bottom bracket, and wheel interfaces for smooth operation and correct torque.\u003c\/p\u003e\n\u003cp\u003e• Ensure bolts, dropouts, and mounting points are tight and secure before rides.\u003c\/p\u003e\n\u003cp\u003e• Keep cable routing areas clean to reduce friction, grit wear, and contamination.\u003c\/p\u003e\n\u003cp\u003e• Store indoors in a dry environment to protect steel durability and finish.\u003c\/p\u003e\n\u003cp\u003e• Perform routine pre-ride safety checks of tires, brakes, and shifting before every ride.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Surly","offers":[{"title":"XS","offer_id":45745058578623,"sku":"210000059649","price":2599.0,"currency_code":"USD","in_stock":true},{"title":"SM","offer_id":45745058611391,"sku":"210000059648","price":2599.0,"currency_code":"USD","in_stock":true},{"title":"MD","offer_id":45745058644159,"sku":"210000059651","price":2599.0,"currency_code":"USD","in_stock":true},{"title":"LG","offer_id":45745058676927,"sku":"210000059650","price":2599.0,"currency_code":"USD","in_stock":true},{"title":"XL","offer_id":45745058709695,"sku":"210000059652","price":2599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/airbrnblmlqamiyrvima.jpg?v=1781760490","url":"https:\/\/backyardprovider.com\/products\/new-surly-karate-monkey-steel-hardtail-mountain-bike-lost-at-sea","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}